Running two different nVidia GPU or single for PhysX performance ?

People,

I wonder if anyone here can give me any suggestion as to keep using 2x GPU or just use one for gaming performance reason.

My current setup is rather outdated as below:

Intel Quad Core 3 GHz
8 GB DDR2
Asus Rampage Formula (fully dual PCI Express x16 graphics )
http://www.asus.com/ROG-Republic-Of-Gamers/RAMPAGE_FORMULA/

1x Gigabyte nVidia GTX 460 OC 2 GB - requires 2x6 pins power
1x XFX nVidia GTX 9800 XXX Edition OC 2 GB - requires 2x6 pins power


Cooler Master PSU 1000 Watt.

Do I keep them both for GPU & PhysX reason or there is no point in keeping them running due to both of them consumes more power ?
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Senior IT System EngineerIT ProfessionalAsked:
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☠ MASQ ☠Commented:
Ditch the GTX 9800, the 460 hugely outperforms it and you'll probably not see any difference in gaming performance.  PhysX is a distraction as the GPU on the 460 is already doing all the work for you.

As an aside, although badged as Crossfire Only your Formula board is actually quite capable of running SLI so you could link another GTX460 running in the second slot, you'd probably gain an additional 30-40% improvement in graphics performance with reduced power consumption over your current arrangement.

The GTX 460  remains a good high end gaming card but with the advent of the Titans it has slipped in the rankings and currently is around 100th in performance against all available cards (compared with the power hungry GTX 9800 at 300th!)

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Senior IT System EngineerIT ProfessionalAuthor Commented:
Thanks MASQ,

Initially I was considering:
Radeon R7-370, R270X (OC), GTX 760, GTX 960and also refurbished R9-280X (OC)

which one do you think is the fastest to play DX 11 games ?
☠ MASQ ☠Commented:
All these are PCI-Ex16 3.0 cards and your board is 2.0.  That said:

The GTX 960 is easily the best performer for DX11 3D and uses less power than most of your list.

It also wins on performance against price and depending on how much your refurbed 280X is costing you the GTX 760 could well scrape a second place for "bang per buck".

All will outperform your GTX 460
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David Johnson, CD, MVPOwnerCommented:
for $40 moe i'd get the XFX Double D R9 380
☠ MASQ ☠Commented:
And there I was trying not to spend ITSystemEngineer's cash :)

Still think the GTX 960 would give the R9 380 a run for its money tho (and would run cooler and with less juice!)
Senior IT System EngineerIT ProfessionalAuthor Commented:
Thanks guys !
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